Pneumatic Excavation Phases
The covering is cut with classical pneumatic tools supplied with the fitting. Fig 1
Earth is then shattered and uncompacted using the disruptive lance and Venturi lance that replace worker pick and shovel. Fig 2
Excavation material, by aspiration, is removed via suction pipe, which replaces worker blade, is accumulated in a storage tank while the air is put again into atmosphere. Fig3
According to the principle of pneumatic transport, products to be transported, placed in suspension in the air, are blown and aspirated.
Maintaining a sufficient speed in the circuit is therefore necessary to avoid any deposit of material during transport.